Drug interactions
Pentazocine + Zotepine
Severity: Moderate
Pentazocine and Zotepine: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Pentazocine and the sedating antipsychotic zotepine both depress the central nervous system. Combined use can intensify drowsiness, impair psychomotor performance and may reduce respiratory drive. Zotepine also lowers the seizure threshold, as can pentazocine.
What this interaction means in plain words
Pentazocine and Zotepine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive CNS depression, with zotepine's histamine and alpha-adrenergic blockade adding to opioid sedation.
What to do
Start with the lowest effective doses and monitor sedation, respiratory rate and blood pressure. Advise patients to avoid driving and alcohol.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Pentazocine
- Calcium / magnesium / potassium / sodium oxybates + Pentazocine Contraindicated
- Olanzapine / samidorphan + Pentazocine Contraindicated
- Pentazocine + Phenelzine Contraindicated
- Pentazocine + Tranylcypromine Contraindicated
- Alfentanil + Pentazocine Major
- Alprazolam + Pentazocine Major
Frequently asked questions
Can I take Pentazocine with Zotepine?
MediHelp rates the interaction as moderate. Pentazocine and Zotepine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Pentazocine and the sedating antipsychotic zotepine both depress the central nervous system. Combined use can intensify drowsiness, impair psychomotor performance and may reduce respiratory drive. Zotepine also lowers the seizure threshold, as can pentazocine.
How serious is the interaction between Pentazocine and Zotepine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Start with the lowest effective doses and monitor sedation, respiratory rate and blood pressure. Advise patients to avoid driving and alcohol.
What other medicines interact with Pentazocine?
MediHelp also lists interactions of Pentazocine with, for example, Calcium / magnesium / potassium / sodium oxybates, Olanzapine / samidorphan, Phenelzine. The full list is on the Pentazocine page.
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